javascript 下拉 onchange 函数到 html
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时间：2020-10-26 09:53:38 来源:igfitidea点击:
Dropdown onchange function into html
提问by Jeniffer
I want to use Dropdown onchange function into html to pass value, it works fine in submit button, But I want to use Dropdown onchange, Pls help how to do it?
我想在html中使用Dropdown onchange函数来传递值，它在提交按钮中工作正常，但我想使用Dropdown onchange，请帮忙怎么做？
<form method="post" action=" ">
<div align="center">
<select name="value">
<option value="">Show Value</option><br />
<option value="2"> 2 </option><br />
<option value="5"> 5 </option><br />
<option value="10"> 10 </option><br />
<option value="20"> 20 </option><br />
</select>
<input type="submit" name="submit" value="Submit">
</div>
</form>
采纳答案by GuZzie
you should add the onChangeto the <select>element like this
你应该像这样添加onChange到<select>元素
<form method="post" action=" ">
<div align="center">
<select name="value" onChange="this.form.submit()">
<option value="">Show Value</option><br />
<option value="2"> 2 </option><br />
<option value="5"> 5 </option><br />
<option value="10"> 10 </option><br />
<option value="20"> 20 </option><br />
</select>
<input type="submit" name="submit" value="Submit">
</div>
</form>
